Definition: You are given a question on high school macroeconomics. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: If Real GDP = $200 billion and the price index = 200 Nominal GDP is
(A)$4 billion (B)$400 billion (C)$200 billion (D)$2 billion

B